2.13inch e-Paper HAT (B)

Introduction

Note: The raw panel require a driver board, If you are the first time use this e-Paper, we recommend you to buy the HAT version or buy more one driver hat for easy use, otherwise you need to make the driver board yourself. And this instruction is based on the version with PCB or driver board.

212x104, 2.13inch E-Ink display HAT for Raspberry Pi, three-color, SPI interface

Interfaces

VCC	3.3V
GND	GND
DIN	SPI MOSI
CLK	SPI SCK
CS	SPI chip select (Low active)
DC	Data/Command control pin (High for data, and low for command)
RST	External reset pin (Low for reset)
BUSY	Busy state output pin (Low for busy)

Working principle

Introduction

This product is an E-paper device adopting the image display technology of Microencapsulated Electrophoretic Display, MED. The initial approach is to create tiny spheres, in which the charged color pigments are suspending in the transparent oil and would move depending on the electronic charge. The E-paper screen display patterns by reflecting the ambient light, so it has no background light requirement. Under sunshine, the E-paper screen still has high visibility with a wide viewing angle of 180 degree. It is the ideal choice for E-reading.

Communication protocol

Note: Different from the traditional SPI protocol, the data line from the slave to the master is hidden since the device only has display requirement.

CS is slave chip select, when CS is low, the chip is enabled.
DC is data/command control pin, when DC = 0, write command, when DC = 1, write data.
SCLK is the SPI communication clock.
SDIN is the data line from the master to the slave in SPI communication.

SPI communication has data transfer timing, which is combined by CPHA and CPOL.

CPOL determines the level of the serial synchronous clock at idle state. When CPOL = 0, the level is Low. However, CPOL has little effect to the transmission.
CPHA determines whether data is collected at the first clock edge or at the second clock edge of serial synchronous clock; when CPHL = 0, data is collected at the first clock edge.

There are 4 SPI communication modes. SPI0 is commonly used, in which CPHL = 0, CPOL = 0.

As you can see from the figure above, data transmission starts at the first falling edge of SCLK, and 8 bits of data are transferred in one clock cycle. In here, SPI0 is in used, and data is transferred by bits, MSB first.

e-Paper HAT Hardware/software setup

e-Paper HAT Codes description

Documentation

Demo code

Github

Datasheets

Datasheets

Related Resources

Question:

Working requirements of e-Paper?

Answer:

Two-color B/W e-paper
- 【Working】Temperature: 0~50°C; Humidity: 35%~65%RH
- 【Storage】Temperature: ≤30°C; Humidity: ≤55%RH; Max storage time: 6 months
- 【Transport】Temperature: -25~70°C; Max transport time: 10 days
- 【Unpack】Temperature: 20°C±5°C; Humidity: 50%RH±5%RH; Max storage time: Should be assembled in 72h
Three-Color e-Paper
- 【Working】Temperature: 0~40°C; Humidity: 35%~65%RH
- 【Storage】Temperature: ≤30°C; Humidity: ≤55%RH; Max storage time: 3 months
- 【Transport】Temperature: -25~60°C; Max transport time: 10 days
- 【Unpack】Temperature: 20°C±5°C; Humidity: 50%RH±5%RH; Max storage time: Should be assembled in 72h

When store three-color e-Paper, please refresh it to white, and keep the screen upward. Note that you need to update it at least every three months.

Question:

What do you need to note about e-Paper refreshing?

Answer:

Refresh mode
- Full refresh: e-Paper flicker when full refreshing to remove ghost image for best display.
- Partial refresh: It don't flicker if you use partial refresh (only some of the two-color e-paper support partial refresh). Note that you cannot use Partial refresh all the time, you should full refresh e-paper regularly, otherwise, ghost problem will get worse even damage.
Refresh rate
- When using, you should set the update interval at least 180s.(except Partial supportable types)
- Please set the e-Paper to sleep mode or power off it directly, otherwise, the e-Paper is damaged because of working in high voltage for long time.
- You need to update the content of three-color e-Paper at least one time every 24h to avoid from burn-in problem.
Working place
We recommend you to use the e-Paper indoor. If you need to set the e-paper outdoor, Please place the e-paper in shadow and protect it from UV. When you designed you e-paper product, you should take care about the working situation like temperature, humidity, etc.

Question:

How much could the flexible e-paper be bended

Answer:

The IC part of e-Paper cannot be bended, you can bend the display area in degree larger than 60°C

Question:

Why the e-Paper cant work with Arduino?

Answer:

The I/O level of Arduino is 5V, and the e-Paper should be driven with 3V3. If your Arduino cant drive the e-Paper successfully, please try to convert the level to 3.3V

You can also try to connect the Vcc pin to the 5V of Arduino to see whether the e-Paper works, but we recommend you not to use 5V for a long time.

Question:

Why does the color of e-Paper look a little black or grey?

Answer:

You can try to change the value of Vcom on demo codes.

Question:

Three-color e-paper looks more red/yellow than the picture on website?

Answer:

Because of different batch, some of them have aberration. Store the e-Paper right side up will reduce it. And if the e-Paper didn't be refreshed for long time, it will become more and more red/yellow. Please use the demo code to refresh the e-paper for several times in this case.

Question:

Why my e-paper has ghosting problem after working for some days

Answer:

Please set the e-paper to sleep mode or disconnect it if you needn't refresh the e-paper but need to power on your development board or Raspberry Pi for long time.Otherwise, the voltage of panel keeps high and it will damage the panel

Question:

Why the FPC of the e-Paper is broken after using for some times?

Answer:

Please make sure you have used it in correct way.

To：

Dear Customers, There may be a lag of several hours before we could process your order, depending on the time difference between your location and ours. Sincerely hoping your understanding!

Email(support)

services01@spotpear.com

TAG： Rounded LCD ESP32 LVGL PoE Power Supply Raspberry Pi Monitor Official Original DisplayScreen 15.6 inch LCD Full HD 1920x1080 15.6inch Luckfox Sipeed SLogic 4IN1 USB Logic Analyzer 80M / DAPLink / CKLink Debugger Tool / UART Module ESP32 Development Board C3 1.28 inch Round Rotary LCD Smart Screen 1.28inch Knob Display 240x240 LVGL for Arduino JETSON NANO MINI Expansion Board Luckfox Pico MINI GPU Monitor Display Sipeed MaixCAM SG2002 RISC-V AI Camera Kit with Screen Audio WIFI6 Linux Board ESP32-S3 Development Board 3.16 inch LCD display 3.16inch Screen SD slot 320x820 RGB LED ST7701 Raspberry Pi 21.5inch FHD LCD 1080x1920 Capacitive TouchScreen Display For Raspberry Pi/Jetson Nano/ RP2040 Lidar H618 Electronic EYE 0.71 inch Round Double LCD Display Dual Screen For Arduino Raspberry Pi ESP32 Pico ST Raspberry Pi IR Thermal Imagi EPS32S3 1.8inch Round LCD Display WIFI-AIDA64-Secondary-TouchScreen/Wireless-Power/Video-Player LVGL DAPLINK

Price：

$18.89

Model：

2.13inch-e-Paper-HAT-(B)

Raspberry Pi 2.13inch E Ink display HAT, red, black, white, 212x104

TAG： Raspberry Pi 5 ABS Case X1201 Raspberry Pi 5 UPS Raspberry Pi 11.9 inch DSI LCD Display MIPI 320×1480 Capacitive TouchScreen Luckfox Pico Camera MIS5001 5MP wide-angle lenses&zwnj; For RV1106/Pro/MAX/Ultra (Not For RV1103 Pico) Raspberry Pi Pico 1.14inch LCD EchoEar 1.85 inch Round TouchScreen 1.85inch QSPI LCD 360*360 CST816T ST77916 ADXL357BEZ Serial Server Industrial 4-ch PWM RS485 pulse output module Modbus RTU rail Jetson Xavier NX Kit Raspberry Pi 5 Active Cooler Black ESP32-S3 QMI8658A Raspberry Pi 10.1 inch DSI LCD TouchScreen Display 800x1280 RK3576 RK3506 ESP32-P4 Luckfox Lyra LoRa32 ESP32 OLED 0.96 inch Paxcounter Disaster-Radio CH9102 SX1278 SX1276 LILYGO TTGO ESP32-S3 1.28inch LCD etc. 3D Display Transparent Screen ESP32-S3N8R8 7inch LCD Display TouchScreen 800&amp;amp;amp;amp;times;480 WiFi Bluetooth CAN RS485 Sensor ESP32-S3-Zero Raspberry Pi 5